Container



C. BUTTY' CONTAINER Jan. 29, 1935.

Filed NOV. 28, 1933 a lwuu INVENTOR,

ATTO RN EY Patented Jan. 29, i935 UNIT D STATES CONTAINER Oarlos'Butty, Buenos Argentina Application nonmem- :8, 1933. Serial nogiouz'o 1 claim. (01. 229-48) The present invention relates to containers and has for its object the provision of a container of very simple and economical construction permitting the use of sheet cardboard for forming the 5 body of the container and, enabling a perfectly air-tight joint to be obtained as well as complete separation between the contents and any material capable of altering them, such as the cardboard itself or metal parts.

The container which is the object of the present invention permits of the preservation of solid or liquid substances subject to change, under the same conditions as in a glass or sheet-tin container, and costs less than these, since the mate rials employed in its manufacture are ordina cardboard, strips of tin-plate or other material for uniting the several parts, and cheap covering material suchas water-proof paper, tin or aluminium foils, and the like.

The invention consists essentially in forming a container as a'prism, cylinder, cone or pyramid or a combination of these forms having a circular, square, rectangular, elliptical or the like base, the body being formed so as to. have a double wall consisting of two sheets of flexible material, the longitudinal edges of which are joined together by strips of sheet metal or the like bent so as to have a cross section substantially in the shape of two opposed S's joined at the extremities of-their 3 upper curves to provide'a pair of symmetrical externalchannels disposed back to back (formed by the tails and lower bulges of the 8's) and a pair of symmetrical inner channels disposed mouth to mouth (formed by the upper bulges of the Ss). The edges of the sheet forming the inner wall of the body of thecontainer are introduced into the inner channels and those of the sheet forming the outer wall are inserted in the outer channels the whole being then compressed to form the air and water-tight joint.

A uniting member having substantially the above-described cross section has heretofore been used but it has been applied only for the purpose of joining the longitudinal edges of a single sheet so that the inner channels have not been used. In the known construction the edges of the body forming the sheet have been introduced into the outer channels and the strip then compressed thus flattening the top and bottom walls of the inner channels and producing a joint in which the bends of theouter channels of the uniting member abut.

As will readily be understood there will then be unprotected metal lying exposed along the seam on both the inner and outer faces of the container body. Moreover, it is not possible however great the compression applied, to produce a joint of this construction which shall be water'- tight, unless of course soldering or the like be 5 resorted to.

The construction according to the present invention however,'does enable a water-tight seam to be obtained by mere compression of the uniting member and owingto the fact that the edges of 10 the inner wall are bent around the lower bulges of the ss and introduced into the inner channels, there is no exposure of the uniting member on the inside of the container. The isolation of the contents-from the outersheet is obtained by using as an inner sheet-some material not readily subject to change, such as aluminium or tin foils, waterproof. paper and the like, or forming the inner sheet of say cardboard and coating the face which be the inner face of the assembled body, with such non-changeable materials.

The isolation of the contents from the metal at'the joint is obtained in accordance with the novel construction by inserting the edges of the inner sheet as indicated so that the metal of the uniting member is, on the inside of the container, completely covered by said inner sheet.

The container body may be provided with any suitable type of top and bottom applied in any well known manner either permanently or removably. I

In order that the nature of this invention and in what manner the same is to be performed may be readily understood, certain embodiments will now be described and illustrated with ref-. erence to the accompanying drawing wherein Fig. 1 is a part-sectional elevation of a container according to the present. invention, showing one form of lateral joint and one form of fixed end-covers.

Fig. 2 is a cross-section along the line A-A of Fig.1.

Figs. 3 and 4 are sectional and front views respectively of the lateral uniting member shown in Fig. 1. I

Figs. 5 and 6 are details of the novel joint during and after formation, respectively.

In all the aforementioned figures the same reference characters refer to like or corresponding Parts.

The body of the container shown in Figs. 1 and 2, is formed by an inner sheet 1 of flexible material for example and an outer sheet 2 of a 66 similar material. The former may be lined with an inner lining 3 formed of a thin sheet of material not readily subject to change, for example tin oraluminium ioils water-proof paper or the like, which may be amxed to the cardboard, as by gluing, or may be loose. Said lining is intendedto preserve unaltered the contents and/or the walls of the container either by protecting them from the permeation of moisture, preventing the evaporation transflltration of the components thereof of the contents or finally by insulating the contents from such parts of the container as might cause them to change as, for example, the cardboard of the body itself and the joint.

The lateral straight edges of the sheets 1 and 2 are joined by means of a member formed of a straight strip of sheet metal or other material 4i bent so that before application, it has the section illustrated in Fig. 3, and after application, a double-S section as seen in Fig. 6. This member forms two symmetrical external channels 5 and two likewise symmetrical internal channels 6. The edges of the member may have perforations 7 punched therein to form claws on the inner side of the external channels 5, which are intended to penetrate in the cardboard sheet 2 so as to secure it firmly.

In order to assemble the body, the lateral edges of the inner sheet 1 here shown as provided with a lining 3, are fitted into the internal channels 6 of the member 4, and the lateral edges of the outer sheet 2 are fitted into the external channels 5. 'I'hereupon the assembled parts are pressed tightly together by means of a suitable tool, so as to bend outwards the edges of sheet 1 which are imprisoned in the channels 6, and to flatten these channels against the external channels 5, whereby at the same time the edges or sheet 2 are likewise firmly imprisoned and secured.

In this position the member 4 presents externally a smooth surface and tot-ms an inextensible link between the two bent back edges of the sheet 1, thus preventing their separation and giving the container a very high degree of resistance. The shape and proportions of the bends of member 4 are such that the bent back portions 8 oithe inner sheet 1 are held firmly and strongly pressed against each other, contact being made at this point by the surface having the lining 3 so that the inner surface of the body is completely smooth and there is no break in continuity whereby the contents could come into contact with the metallic uniting member 4 or easily filter or leak through the joint. The desired airtightness and insulation is thus achieved.

Ii great strength is required in the walls of the container several container bodies 01 the right diameters may be formed and nested, the whole being united together by the bottom and/ or top.

The container which is the object of this invention is extremely economical due -to the use of materials of low cost, such as cardboard, which ordinary quality, since when impermeability or absolute insulation of the contents is required, the cardboard is coated or covered with a thin sheet of suitable material such as water-proof paper, tin, aluminium and the like or varnish. The container is also economical due to the simplicity of its construction, which requires i'ew joining devices and little handling.

The practical advantages of this container are its reduced weight, and solidity, its air-tightness, which permits of its use as a container for liquids, and the perfect insulation, if desired, of the contents, which makes it possible to preserve products therein in as hygienic a manner as in glass. In fact, neither glue nor any other ingredient which might give rise to alteration in the contents of the container need be employed in the construction of the parts coming into contact with said contents. As will have been. seen, the latter do not come into contact with the metal of the joints or with the cardboard of the body,

but only with a coating not liable to change held in position by its edges in such wise as to form a perfect protective coating to the inside of the body of the container.

It is clear that various modifications may be made in construction and details without thereby departing from the spirit and scope of the invention.

Having now particularly described and ascertained the nature of this invention and in what manner the same is to be performed, what I claim is: a I A container of flexible material having a body portion comprising an outer-wall and an inner wall and a uniting member oi strip material adapted to be compressed for joining simultaneously the longitudinal edges of said outer and inner walls, said uniting" member being a crosssection substantially in the-shape of two opposing S's joined at the extremities of their upper curves to provide a pair of symmetrical external channels disposed back to back and a pair of symmetrical internal channels disposed mouth to mouth, the container being characterized by the fact that the longitudinal edges of the inner wall are introduced into said inner channels and bent over so as to be above said external channels, the longitudinal edges of the outer wall being introduced into said outer channels, the arrangement being such that upon compression of the uniting member the tails of the 8's lie between the outer and inner walls and the edges of the inner wall lie outside the outer wall but within the inner channels.

' CARLOS BU'I'I'Y. 

